MISC

2009年

Ultrafast laser spectroscopic study on photochromic cycloreversion dynamics in fulgide derivatives: one-photon and multiphoton-gated reactions

NEW JOURNAL OF CHEMISTRY
  • Yukihide Ishibashi
  • ,
  • Tetsuro Katayama
  • ,
  • Chikashi Ota
  • ,
  • Seiya Kobatake
  • ,
  • Masahiro Irie
  • ,
  • Yasushi Yokoyama
  • ,
  • Hiroshi Miyasaka

33
6
開始ページ
1409
終了ページ
1419
記述言語
英語
掲載種別
DOI
10.1039/b900999j
出版者・発行元
ROYAL SOC CHEMISTRY

Cycloreversion processes of three photochromic fulgide derivatives in toluene solution were investigated by means of picosecond and femtosecond laser photolysis methods. Femtosecond laser irradiation revealed that the cycloreversion processes upon visible one-photon excitation took place within a few ps in these three derivatives. On the other hand, drastic enhancements of the reaction yield were observed under picosecond laser exposure. Excitation intensity effect of the reaction yield and dynamic behaviors revealed that the successive two-photon absorption process leading to higher excited states opened the efficient cycloreversion channel in the three derivatives. The reaction yields in higher excited states were found to be quite large in these three systems, 0.35-0.55, while those in the S(1) state were 0.048-0.21. The correlation of the reaction yield in the S(1) state with that in S(n) states suggest the character of the electronic states connected by the optical absorption plays an important role in the control of the cycloreversion reaction.

リンク情報
DOI
https://doi.org/10.1039/b900999j
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000266655400035&DestApp=WOS_CPL
ID情報
  • DOI : 10.1039/b900999j
  • ISSN : 1144-0546
  • eISSN : 1369-9261
  • Web of Science ID : WOS:000266655400035

エクスポート
BibTeX RIS